Duplicating apparatus



Dec. 9, 1924.

A. BESSAT ET Al.

DUPLICATING APPARATUS Filed Sept 21. 1922 '7 Sheets-Sheet 1 INVENTUH fliagile zessef in Z [ak n 10x1: Zz'e'venk Dec. 9, 1924. 1,518,959-

A. BESSAT ET AL.

DUPLICATING APPARATUS ile ep 21' 1922 v Shets-Sheet s INVENTUHS #0 0952 Zgssdf ran 1 2 [gul s ZJ I/ZQ'LS 72% M ATTUHNEY A.-BESSAT ET AL.

DUPLICATING APPARATUS Dec. 9, 1924- Filed Sept. 21 1922 7,Sheets-Sheet 4 Dec. 9, 24.

A. BESSAT ET AI.

DUPLICATING APPARATUS 7 Sheets-Sheet 5 Filed Sept. 21, 1922 $522922 a; [e'an [0a Dec. 9, 1924 A. BESSAT ET AL.

DUPLI CATING APPARATUS Filed Sept. 21. 1923 '7 Sheets-Sheet 'f mvmma n m 5 1 u w W in? n ma n u n u n I m a: E n n m3 2 u 1 t H n w- 4 Elfin H m n 5 T f U n m m m p 2 u g ATTEI F1 NEY Patented Dec. 9, 1924.

ADOLPI-IE BESSA-T AND LEON LOYUIS LIE'vnns, or NANTERRE, FRAN E;

DU PIiICA-TIN'G APPARATUS.

Application filed: September 2131922. Serial No. 589,693.

To all whom it may conccvwr Be it known that we, Ano-nrnn Bnssa'r, a citizen of the'Repu-blic of France, and a rest-- dent of Nanterre, France, and LEON Louis 5 LnivnNs, a citizen of the Republic of France,

and-a. resident of Nanterre, F rance, have i'nvented a new and useful- Duplicating Appa-- ratus, 1 which. improvements are fully set. forth in= the following specification.

Inorder to make our invention more clearly understood, we have appendedhereto drawings illustrating by way of example a complete rotary duplicator embodying our invention.

In the said drawingsiz' Figure 1 is-an elevation of a machine built accoreing to our invention.

' Figure 2-, is-a section-ofthe same. 1 I

I Figurew3 shows the interior of one otthe printing cylinders, and illustrates the in rangement of the kneading rollers fed from a central inkcontainer and forcing ink through the perforated screens of the printing. cylinders Figurest and 5+ show in section the central inlr container in its two positions closed andopen.

Figure 6 is a side elevationof the adj ustable vd-evicefor drying'the sheet after it has been'printed-on its front orba-ckby the second cylinder.

Figure 7 is a: face View of the same device Figures 8 and 9 are face and sectional views of the device for adjusting the relative positionsqofportions of the impression for printing intwo-colours or printing on both sides of the paper.

F'gure 10 is an elevation of a smaller apparatusdesigned for printing on the front side of the paper only. V

Figure 11 illustrates a device designed to secure the blotting paper on the drying rollers.

Figure 12 is a section of the device for automatically feedin g the r p aper.

, Figure 13' is a plan of the said automatic feeder.

Figures-l't-and 15' show insection and in front elevation additional parts'for the automatic feeding of double sheets. 1

Our apparatus (Figures 1 and 2)- comprises two mainparts, namely, two printing cylinders 1 and 2; which are interchangeable and constituted as tollows:

A pertorated screen Sis mounted on two rings 4 and 5 secured to two supports 6 and which are mounted in their turn on a'fi xed hollow axle 8 whereon saidsupports are rotated by hereinafter described; mechanical means.

Inside the said fixed hollow axle 8 is. r0

tatably fitted a tube 9 in which is storedthe ink for the printing This ink-containing. tube isv closed at two-- points-in its' length by fixed and removable plug s' 10 and 11, the latter plug enabling the tube to be readily cleaned. I I I At one end of tube 9' is amilled or knurled stud 12, by turning? which the said tube can be rotated within and relatively to axle 8 whereby two s1ots13 and 14 iguresA and 5) provided insaid tube andaxle 8 are made to coincide, thereby permitting the contained in the tube to be discharged. Figure 4 shows the containing tube 9 closed and Figure 5 showsit open-v j In order to fill the ink-container 95 ;a n illed stud 12 has only to! be p-ulledoutward, thus withdrawing it. from the hollow axle, where- The first roller 17 is suppliedwithink directly iirom the ink container. mounted at opposite ends on movable blocks 18 which fit adjustably in slots inthe'brack;

,ets 16, thus permitting it to be shiftedtbward or fro-m the inkingdevice so asto regu late the-feedot the ink: It can be held in adjusted position by means of screws 19 and 20 which engage said blocks 18. 1 V 1 Said roller 17 transmits the inkywhi'le kneading it, to roller 21 which is: in contact with screen 3, through an intermediate roller 22 these two rollers 21' and 22. are mounted on levers 23 and 24 which are pi-votedito brackets 16. and are subjected to the action of suitable'springs which tend to maintain said rollersincontact with each other and with the roller 17 and screen 3 despite any oscillationsthat may occur during rotation.

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The ink supplied to the screen in the above explained manner is fed to a fabric wound around the screen and secured by a stretching device hooked to four studs 25; and this fabric, in turn, feeds the ink to the stencil to be reproduced, which stencil is wound around it and held in place by said studs, but it will be apparent that the fabric can be omitted, if desired, and the stencil wound directly around the screen and retained in place by the studs.

Axles 8, carrying the two above described printing cylinders 1 and 2, are mounted on a frame 26 and secured by clamping devices 27 and 28; these devices are mounted on pivots 29 and areheld in place by milled studs 30.

Proper positioning of the cylinder-carrier axles in frame 26 is ensured'by lugs 31.

A pair of cams 32 mounted on a shaft 33 operated by a handle 34 act on the lower arms of apair of centrally-pivoted levers 35 which are subjected to the action of retractile springs 36. These cams oppose the action of springs 36 and in so doing cause pressure roller 37 to be kept away from the printing cylinder during the starting period.

In the case of printing cylinder 2, the separation of the corresponding pressure roller 10 therefrom is effected in the following manner:

Lever 38 has a two-fold function in that it is intended to effect the imposition of pressure, as the case maybe, either on or under the printing cylinder according to the position it occupies for colour printing or printing on both sides of the paper, which position will be hereinafter described.

For this purpose, spring 39, which causes roller 40 to press on printing cylinder 2 is connected to an operating handle 41, which can shift spring 39 to the right or to the left, thus changing the direction of the pressure. This operation therefore also withdraws pressure roller 40 from cylinder 2 during the starting period. 7 7

Handle 41 is kept in proper position by means of a detent 42 (Fig. 2) which engages the adjacent part of frame 26 and is preferably subjected to the action of a spring concealed in said handle. The latter is connected by shaft 4 1 to a similar crank or handle at the opposite side of the machine and to which a similar spring 43 is attached, so that both springs 39 and 43 will thus be shifted in unison. Spring 43 acts on a lever 38 at the same side of the machine, and this last-named lever 38 acts conjointly with the front lever on the pressure roller 10.

Rotation of the parts of the machine (Figures 1 and 2) is effected by crank 45 which operates a train of pinions shown in dot-and-dash lines. Should a power or electrio drive be used, the crank would be re placed by any suitable transmission gear.

When the machine is in operation for simultaneous printing on both sides of the paper, printing cylinder 1, by means of the rollers 46 and 417, which is carries, lowers r the levers '35, thus moving the rubber pressure roller 37 away from said cylinder;

This lowering action is effected by providing the upperarms of the levers 35 with vertical extensions 35' which are formed at 7 their free ends with cams 35 said cams being disposed in the path of the rollers 16 and 47 so as to be engaged thereby. The levers 35 are thus rocked in a clockwise dl'.

it can be engaged by roller 37 as soon as that roller is again raised into contact with said cylinder. 7 r

The sheet is thus driven and printed. Then, led by a guide-plate 48, it passes between the two rollers 49 and 50. Roller d9 drives roller 50 which is a blotter for drying the front side of the paper; saidroller 50 is mounted on a bell-crank lever 51 which, through spring '52, ensures the re quired pressure ondriving roller 19. j

While the sheet is passing under'drying roller 50, cylinder2 lifts roller 40 by means of its rollers 53 which operate levers-38, thus permitting the already front-printed sheet to be positioned "at the exact place whence, as soon as a roller 40 is lowered, it will continue to be driven, so 'as to be printed on the back.

After being printed on the back, the sheet continues its travel, passes through thehereinafter described drying. device (Fi ure '6) and drops on a receiver tray hooked latter. a i 7 When the apparatus is. in operation for simultaneous printing in two colours, printto the 7 ing cylinder 2 has to be positioned as shown by dotted lines in Figure 1, and roller 40 is to be put on the lower supports '54 on levers 38. It is tobe understood in this connection that the said levers 38 are,.in part, of duplex construction: that is to say, the upper arms have upper and lower extensions 38 at their ends, as shown in dotted lines in Figure 1, each extension being pro vided with a terminal cam 38 so that in either position of cylinder 2 its studs or rollers 53 will engage the adjacent cams during the revolution of the cylinder.

Both cylinders 1 and 2 are therefore in the same plane.

Each of them is fitted with an original stencil, one for the fundamental or ground print colour, the other forthe complemental colour, and, of course, the two ink containers are filled with differently coloured inks.

\ Iii order to permit perfect relative adjustment of portions of the impressions for two-colour printing as well as for printing on'both sides of the paper, we provi'de an adjusting device ('F-i-gnres 8 and This" device, by means of screw 55 and of ring 56 secured to: pinion 57, enables the latter to berendered independent of support 58, thus enablingsaidsupport to be tnrned or shift} ed' either forward" orbackward. as required for adjustment. The extent of this shift i'ngi's limited by notch 59 iii-support 58. Once the adjustmentis completed",support 58 is again made fast to pinion 57 by tight eni'n' screw 55'. p v

After having been printed on its under side by cy1inder'2, thetwo-colour printed" sheet continues its travel and passes'through the drying; device which we will now describe. 1

Led" by guide plate' 60, the sheet passes between driving roller 61 andblottin-g roller 62'an'd thence drops on the receiver tray.

Rotation of thedriving device is obtained as follows Pinion 63 (Fig; 6) meshes with and is driven by pinion 64 which is itselfrotated by the aforementioned driving train' oper ated by handle 45. Said pinion. 63 meshes with and. drives pinion 65 which, in turn, drives pinion 66, the latter driving a pin-- ion 67 fixed to driving roller" "61.

For drying the sheet in the case of bothside printing, drying roller 62:must pass under roller 61;

This is operated as follows: The two rollers 61 and/62 are mounted in a movable frame 68 adapted to swing about two pivots 69' and 70; Saidframeis provided with two tightening studs 71 and 72 adapted to keep it in the required position, and these two studs 71 and 72 liave'only' to be'shifte'd' from notch 73 to notch 74 and vice-versa.

When the swinging frame is turned over, pinion 67 of driving roller 61 comes into mesh with pinion 65 permitting rotation in the opposite direction] and guide-plate 75takes the place of guide-plate 60.

The whole drying" device is detachable, swings about its hinges" 76', toallow cyl inder 2 to be removed when required. and is secured to the machine bv'two hooks 7 7 (Figure 6).

To permit prompt and easy replac ement, each drying 1 01161 50 and 62"i's detacliablyf mounted on" its axle whereon it is held on one side by a cheek or flange f78 (Fig."7-)l provided with a journal 79 and-on the other side'by a tightening ring 80 screwed. on a'xl'e 81, thus ensuring at the saine'timethe fixing and the drive thereof. 5

A simple means for fixing the blotter on the'drying roller (Figure 11) consists'in' forming the rollerwith a longitudinal slot 83 in which'a metal blade 8' 1 is set to secure the strip of blot-ting paper, which strip is constantly 'st-retc'hed' by means of aspring hook 85. V

As alreadystatecLthe apparatus is pro vided' with an automatic paper feeding dc vice- (Figures 12, 1 3 14*and15)"'constituted by a'pla t'e or table 86, on the-sides'of which are secured two rails 87 and 88. I

Said table 86- issecured" to the machine in the following manner p The ra-ils are providedin' front'withtwo' slots 89 toreceive a cro'ss shaft 90 which is securely held therein by a V shaped strut 91 pivoted at the upper ends of its arms to" the under side of the table and fixed at its apex to the bedof the machine by means of a milled or linurledstu-cl 9 2;

In VlGW' of enabling pa-per" oi fdifie'rent sizes to be used, two paper-guides 93" and 94: are arranged onthe sides of rails '87 and 88 and operated by means of milled studs 95 and 96 controlling two set oilad justment' screws 97 and 98. Transversely of the table and at the rear thereof is anot'her paper guide 99 operated by a screw 100 working in slot 101 provided in plate 86.

In front, the sheets 102 are stoppedby a stop 103 sliding in grooveslfle made in the front part of the two rails 87 and On top o'f'said stop 103 are let iutwo blades 105 holding the sheets to be printed and permitting stop 103 to be maintained always at their level, i I p To the said stop are a'tfi'xed' two pins 106 on which rests a guide shutter' 107 linked on 'a small axle 108'j'ournaled' on the ends of rails 87 andl'88, Said pins allow guideshutter 107 to follow the downward move- 1nent 'of step 103 and thus to be kept constantly in the position required for guiding the sheets to be printed down to. roller 37 (Figures 1 and 2). [p v 1 Working of the automatic feeder is as folows:

A pinion 109is provided with a stud 110' to which is pivoted one end of a connecting rod'lll locked there by a bolt 1'12 operated by a pull knob 113.

Said connecting rod transmits the requit-ed" reciprocatory motion to two arms 114 and 115 attached to an axle 116'journaled in two bearings 117 secured under table 86.

At the upper part of these two arms are provided" two guide notches 118, so as to reciprocate shaft 119 in slots 120 formed in the'rails 8 7 and 88.

Said shaft 119' has pivoted to it twoarms 121 and 122, carrying rubber roller 1231 On the apparatus being operated, a stop 124011- a 'counter-ar1n12'5, which is associated' with arm 121, comes intocontact with ro'd' 126 which connects the two rails, thus locking thesaid' counter-arm for a momerit against movement. This arm 125 is p-rovidedwith two slots128 and127, which ran allow shaft 119 and arm 121 to continue their travel. A pawl 129 is carried by arin 121 and is normally engaged by arm 125 and held in inoperative position; but when said arm 121 moves beyond arm 125, the said pawl is released and, under the action of a coil spring 130, comes into engagement with ratchet 131, thus locking roller 123 against rotation for an instant. Hence said roller, in its rearward movement will carry with it the sheet held by paper guide 99, thus causing the sheet to buckle with the result that the said sheet is disengaged from the two blades 105 of stop 103.

At this moment roller 123 resumes its movement in the opposite direction and, on being blocked for a second time by pawl 131 acting on ratchet 135, it travels nine centimeters, the first two of which permit the parts of counter arm 125 and its associated parts to be returned to position by spring 136.

While effecting its Q-centiineter travel, roller 123 takes with it the sheet to be printed which, passing above blades 105 and shutter-guide 107 is brought on roller 37 to be driven by the latter when the said roller 37 comes again into contact with printing cylinder 1.

For feeding a new sheet, roller 123 rolls back freely until countenarm 125 and its parts become operative again.

For automatic feeding double sheets (Figures 14: and 15) a removable cambered tablet or leaf 137 is positioned transversely of table 86 and secured thereto by two pins 138. The purpose of this tablet is to initiate the bending 133 of the sheets, which bending is completed by the action of a heavy balance-- weight bar 132 descending in grooves 139 of paperguide 99, wherein it is held by two studsMO.

A sheet counter 1 11 (Figure 13) is mounted on the side of the automatic feeder and actuated from arm 115 by a connecting rod 142.

The apparatus hereinabove described may be used as single operating, that is to say, for printing only the front side of a sheet of paper by means of cylinder 1. For this purpose, all that has to be done is, after removing cylinder 2, pressure-roller 10, and the complete drying device (Figure 6) to hook the receiver-tray on support '82 of guide-plate a8.

Figure 10 illustrates an apparatus adapted for printing on one side of the paper only.

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we claim is:

1. In a duplicating apparatus, a stationary, hollow axle having a slot in its lower surface; a hollow printing cylinder loosely within said cylinder to supply'ink'to the surface thereof, and connected to said axle to be supported thereby; and an ink-conregistration with the axle slot but is adapted to be brought into registration by the rotation of the tube to feed the ink. to said inking device.

taining tube rotatably'fitted within the axle and having a slot which is. normally out of 2. In a duplicating apparatus, a stationary, hollow axle having a slot in its lower 7 surface; a hollow printing cylinder loosely mounted on said axle; means for rotating said cylinder; an inking device disposed within said cylinder to supply ink to the surface thereof, and connected to said axle to be supported thereby; and an ink-con- V taining tube removably and rotatably fitted within the axle and having a slot which is normally disposed in the upper portion thereof, said tube adapted to be withdrawn through one end of the. axle to be filled with ink through its slot, and thereafter to be moved back into said axle and rotated so as to bring said slot into registration with the axle slot to feed the ink to said inking device.

3. In a duplicating apparatus, a stationary, hollowaxle adapted to contain ink; a

hollow printing cylinder loosely mounted thereon; an inking device disposed within the cylinder'to supply ink to the surface thereof, and connected to the axle to be supported thereby; a ineinber within the axle mo able manually at will into and out of V V pozsftion to feed ink'from said axle to the inking device; and means for rotating the cylinder on said axle. I

1. In a duplicating apparatus a stationary hollow axle having a slot in its lower surface; a hollow printing cylinder loosely mounted on, and rotatable relatively to, said axle; an inking device disposed within the 7 cylinder and comprising a supporting frame suspended from the axle and a train of rollers carried by said frame and leading 7 from the axle slot to the surface of the cyl-' inder; and an ink-containing tube rotatably fitted within the axle and having'a slot which is normally out of registration with said axle slot but isadapted to be brought into registration by the rotation of the tube to feed the ink from said tube to the ad jacent roller of the inking device.

5. In a duplicating apparatus, theflcombination of a'printing cylinder; a pressure roller coacting therewith; a pivotallymounted carrier for said roller; 'spring' means connected with said carrier to normally hold the same in a position in which the roller is pressed against the cylinder; 7

and a stud on said cylinder engageable directly and positively with said carrier at regular intervals during the rotation of the cylinder to rock the carrier out of such position and thereby move the roller away from said cylinder.

6. In a duplicating apparatus, the combination of a printing cylinder; a pressure roller coacting therewith; pivotally-mounted supporting means for said roller; spring means connected with said supporting means to normally hold the roller against the cylinder; a member onsaid cylinder engageable periodically with said supporting means during the rotation of the cylinder to automatically move the roller away from the cylinder; and a manual device operable at will on said supporting means to move said roller away from said cylinder.

7. In a duplicating apparatus, a stationary, hollow axle; a hollow printing cylinder loosely mounted thereon; an inking device within the cylinder to supply ink to the surface thereof, and connected to said axle to be supported thereby: an inkcontaining tube movably fitted within the axle, said tube and axle having cooperating means for feeding ink to said inking device consequent upon the movement of the tube; and means for rotating the cylinder on said axle.

8. In a duplicating apparatus, a stationary, hollow axle; a hollow printing cylinder loosely mounted thereon; an inking device within the cylinder comprising a pair of brackets suspended from the axle, pairs of spring-pressed levers pivoted to the brackets, and a train of rollers leading from the axle to the surface of the cylinder and embodying a roller adjustably mounted in said brackets to move toward or from said axle, and other rollers journaled in said pairs o levers and held by the spring pressure in contact with each other and with the first named roller and the cylinder surface; means for feeding ink from the axle to said first-named roller; and means for rotating the cylinder on said axle.

9. In a duplicating apparatus, the combination of a printing cylinder; a pressure roller coacting there-With; a pair of pivotally-mounted levers disposed at opposite ends of said roller and provided at one side of their fulcra with supports wherein the roller ends are engaged, and also with extensions having terminal cams; spring means connected with said levers to normal ly hold them in a position in which the roller is pressed against the cylinder; and projections on the cylinder ends engageable directly and positively with said cams a regular intervals during the rotation of tha cylinder to rock the levers out of such posi tion and thereby move the roller away from said cylinder.

10. A duplicating apparatus, according to claim 9, in which the printing cylinder is movable at will between a. position for printing on one side of a sheet and a position for printing on the other side; and in which the levers are provided with duplex roller supports and cam extensions disposed at opposite sides of the sheet, so that the roller may be supported in position to be moved away from the cylinder by the coaction between the cylinder projection and the adjacent cams in either position of the cyl inder.

In testimony whereof we have signed this specification in the presence of the subscribing Witness.

AI DOLPHE BESSAT.

LEON LOUIS LIEVENS.

lVitness:

CHARLES LiioN LOISEL. 

